Self-indicating balance



0. & Z. W. AVERY.

Pendulum Scales.

Patented May 12, 1857.

Z. W. AVERY AND OTIS AVERY, OF BETHANY, PEXNSYLVANIA.

SELF-INDICATING BALANCE.

Specification of Letters Patent No. 17,252, dated May 12, 1857.

To all whom it may concern Be it known that we, Z. IV. AVE Y and OTIS AVERY, of the town of Bethany, in the county of Wayne and State of Pennsylvania, have invented a new and useful Self-Indicating Scale or Balance by \Vhich the Amount of Weight- Placed in the Dish is at Once Shown on the Scale-Beam; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, and letters of reference marked thereon, making a part of this specification.

The nature of our invention consists in applying a rolling poise a, to the top of the balance beam 6, both the poise a and beam 6 being smooth so as to offer the least possible resistance to the poise a, as it rolls out on the beam. I

Figure 1 is a perspective VlGW of the scale in which the rolling poise (I, is shown on the top of the beam Z). The poise a kept in its position by the armature 0, so arranged that the elevation of the beam Z) causes the poise a to roll out and balance whatever may be placed in the dish. The frame of the scale 9 g g has a standard sufficiently high to hold the upper end of the armature and allow a free sweep as it is carried out in the act of weighing. The armature carries an index 6, which extends down a little below the poise a, to point out the amount of weight on the graduated scale beam Z). The letters marked on this drawing refer also to the corresponding parts on the others. Thus a. is the rolling poise, b, the graduated scale beam c, the armature, e, the index at the end of the armature, f. the transyerse piece on the end of the armature. g y g is the frame of the scale, M2, the arrangement for keeping the pan or dish in its position.

Fig. 2 is a longitudinal elevation with dotted lines showing a continuation of parts.

Fig. 3 is a transverse section showing the manner of connecting the upper end of the armature 0, (represented by f,) with the standard.

Fig. at is a horizontal plan of the scales the dotted lines showing a continuation of parts.

Fig. 5 is a section through A, A, being a common arrangement for holding the pan.

Fig. 6 is a section of the rolling poise a showing its connection with the armature c.

TVhat we claim as our invention and desire to secure by Letters Patent is- The combination of the rolling poise a, with the smooth beam 6, and the armature 0, operating and arranged substantially in the manner and for the purpose hereinbei'ore set forth.

Z. V. AVERY. OTIS AVERY. Vitnesses B. T. VEST, M. O. Annons. 

